core/encodings.js

   1 /*
   2  * noVNC: HTML5 VNC client
   3  * Copyright (C) 2019 The noVNC Authors
   4  * Licensed under MPL 2.0 (see LICENSE.txt)
   5  *
   6  * See README.md for usage and integration instructions.
   7  */
   8
   9 export const encodings = {
  10     encodingRaw: 0,
  11     encodingCopyRect: 1,
  12     encodingRRE: 2,
  13     encodingHextile: 5,
  14     encodingTight: 7,
  15     encodingTightPNG: -260,
  16
  17     pseudoEncodingQualityLevel9: -23,
  18     pseudoEncodingQualityLevel0: -32,
  19     pseudoEncodingDesktopSize: -223,
  20     pseudoEncodingLastRect: -224,
  21     pseudoEncodingCursor: -239,
  22     pseudoEncodingQEMUExtendedKeyEvent: -258,
  23     pseudoEncodingDesktopName: -307,
  24     pseudoEncodingExtendedDesktopSize: -308,
  25     pseudoEncodingXvp: -309,
  26     pseudoEncodingFence: -312,
  27     pseudoEncodingContinuousUpdates: -313,
  28     pseudoEncodingCompressLevel9: -247,
  29     pseudoEncodingCompressLevel0: -256,
  30     pseudoEncodingVMwareCursor: 0x574d5664,
  31     pseudoEncodingExtendedClipboard: 0xc0a1e5ce
  32 };
  33
  34 export function encodingName(num) {
  35     switch (num) {
  36         case encodings.encodingRaw:      return "Raw";
  37         case encodings.encodingCopyRect: return "CopyRect";
  38         case encodings.encodingRRE:      return "RRE";
  39         case encodings.encodingHextile:  return "Hextile";
  40         case encodings.encodingTight:    return "Tight";
  41         case encodings.encodingTightPNG: return "TightPNG";
  42         default:                         return "[unknown encoding " + num + "]";
  43     }
  44 }